To each his own :)
Me? I'm a cheapskate
I'd rather PREVENT A PROBLEM
Make things bullet-proof before a breakdown
With a beautiful NEW LOOKING plug and socket. Open it up (except a molded plug)
TAKE AN IMAGE WITH YOUR CELLULAR and store it permanently. For future use.
We are talking new so cleaning is not necessary. But just like inside the AC breaker panel VERIFICATION OF VERY TIGHT SCREWS IS IMPORTANT
For this job I prefer DIELECTRIC SILICONE GREASE. Goosh a blob onto each terminal, wire to plug.
Then goosh a blob onto each pin.
Then into each slot on the receptacle. Ewwwww you don't like transparent grease on your fingers.
Grab a rag and wipe off the excess.
Congrats! While lazy owners are fighting corrosion and running around buying sockets and plugs, you're kicking back at home, laughing.
Silicone grease can also be used in the AC breaker cabinet. I've screwed around with NA-LOX and silicone grease. Because it is cleaner to use and lasts every bit as long as NA-LOX or longer I prefer silicone grease. Please unplug and shut off the inverter while working in the AC breaker cabinet.
Truly green RVers take a few minutes to eliminate needless carbon footprinting. Keep plugs and sockets OUT of landfills. Save gasoline by not doing the "Hunt and Peck to find a replacement".
To Each Their Own
By the way. Apply 12 volts and energize a terminal exposed to salt air (winter road salt?) and it will corrode dozens of times faster if it is not coating protected. From the university of the hardest knocks.
Go fix your corroded stuff my recliner is calling me...